[英]how do i get params as array in ruby on rails?
我的 controller 中有以下內容
def invoice_params
params.require(:invoice).permit({items: [:items]}, :price, :tax, :discount, :sum)
end
在我的_form中
<td><input size="8" <% form.text_field :items %> /></td> [pants]
<td><input size="8" <%= form.text_field :items %> /></td> [spoon]
<td><input size="8" <%= form.text_field :items %>/></td> [nil]
<td><input size="8" <%= form.text_field :items %> /></td> [nil]
<td><input size="8" /></td>
所以我希望我的數組像["pants","Spoon",nil,nil]
使用這種風格,我的服務器出現以下錯誤
Started POST "/invoices" for 10.0.2.1 at 2020-04-09 00:46:55 +0000
Cannot render console from 10.0.2.1! Allowed networks: 127.0.0.0/127.255.255.255, ::1
Processing by InvoicesController#create as HTML
Parameters: {"authenticity_token"=>"94T3Stght1p9n9Bo44+lvS7CMnE5PEkuic5DP8ifYH4yxY5roVt19ZHpL6sIaiO31i/S5DADP+/ffNG3wdobLQ==", "invoice"=>{"items"=>"das", "tax"=>""}, "commit"=>"Create Invoice"}
**Unpermitted parameter: :items**
<input type="text" name="invoice[items][]" value="pants">
<input type="text" name="invoice[items][]" value="spoon">
將為您提供參數作為數組: { invoice: { items: ["pant", "spoon"] } }
<input type="text" name="invoice[items][1]" value="pants">
<input type="text" name="invoice[items][2]" value="spoon">
會給你的參數為 HASH: { invoice: { items: { "1": "pant", "2": "spoon" } } }
對於您的問題,您需要手動指定名稱,如下所示:
<td><%= form.text_field name: "invoice[items][]" %> /></td>
<td><%= form.text_field name: "invoice[items][]" %> /></td>
<td><%= form.text_field name: "invoice[items][]" %> /></td>
<td><%= form.text_field name: "invoice[items][]" %> /></td>
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